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Rev. Date 040218
Caution & Safety
Mark the Floor to Alert Personnel
When mounting a fan in an area where materials may be elevated into its path, MacroAir
recommends marking or painting the floor with a large crosshatched circle to alert personnel of
the overhead location of fans.
Accelerometer
AVD 550 and 780 fans feature an on-board accelerometer, which will stop the fan and prevent it
from running if it becomes greater than 5 degrees out of level.
Weight Considerations
Ensure the fixing means for attachment to the ceiling such as hooks or other devices shall be
fixed with a sufficient strength to withstand 4 times the weight of the ceiling fan. The maximum
hanging weight for the Model 550 is 172 lbs [78 kg] and the maximum hanging weight for the
Model 780 is 213 lbs [97 kg]. If there is any uncertainty in the strength of the building structure,
a professional structural engineer should perform a thorough evaluation of the building prior
to purchasing the fans. MacroAir provides guidelines for mounting fans; however, it is the sole
responsibility of the building owner and installer to ensure the safety of the mounting system,
that the building structure is sound and that the installation complies with all federal, state, and
local codes.
Torque
The maximum torque (twisting force) during normal operation that must be handled by the
mounting system, including the building structure. For a Model 550, the maximum potential
torque is 100 ft-lbs [136 N-m]. For a Model 780, the maximum potential torque is 250 ft-lbs [339
N-m].
Check Federal, State, and Local Codes
Check all relevant codes to make sure that all product certifications, product listings, and
building regulations are met. Code compliance is the responsibility of the installer.
Windy Conditions
Fans should not be operated when wind is present.
